#app-wrapper {
  width: 100%;
  margin: 0 auto;
  background: #e4e4e4;
  font-size: .1rem;
}
#app-wrapper .app-bg {
  max-width: 6.4rem;
  margin: 0 auto;
  position: relative;
}
#app-wrapper .app-bg img {
  display: block;
  width: 100%;
}
#app-wrapper .app-bg a {
  width: 3.21rem;
  position: absolute;
  left: 50%;
  margin-left: -1.605rem;
}
#app-wrapper .app-bg a img {
  display: block;
  width: 100%;
}
#app-wrapper .app-bg .ios {
  opacity: .8;
  top: 50%;
}
#app-wrapper .app-bg .android {
  top: 60%;
}
